Ventilation hood



FIG. 1 is a front perspective view of a ventilation hood according to my new design;

FIG. 2 is another perspective view thereof, taken from the bottom;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines represent environment or structure and do not form any part of the claimed design. 

The ornamental design for a ventilation hood, as shown and described. 